Idioms

knock one's head against the wall
to waste time trying to do something with no success
The company manager's have been knocking their heads against the wall trying to solve the problem.

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  • knock oneself out (doing something)
  • knock the props out from under (someone)
  • know (someone or something) by sight
  • know (someone or something) like a book
  • know (someone or something) like an open book
  • know (someone or something) like the back of one's hand
  • know (something) backwards and forwards
  • know (something) by heart
  • know (something) from memory
  • know (something) inside out
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  • tied up
  • see fit to (do something)
  • hard on (someone or something)
  • launch forth (on something)
  • cheer (someone) up or cheer up (someone)
  • brimming with (something)
  • show (someone) up or show up (someone)
  • do justice to (something)
  • put on an act
  • pay to (do something)


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